67604. The first edition of Classified Catalogue Code(CCC)was published in:
67605. The term ‘Cybrespace’was coined by:
67606. A group of 8 bits is called:
67607. The binary equivalent of 20 is:
67608. Light year is a unit of
67609. Mirage is due to
67610. Light from the Sun reaches us in nearly
67611. Stars appears to move from east to west because
67612. Pa(Pascal) is the unit for
67613. Planets do not twinkle because
67614. Metals are good conductors of electricity because
67615. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
67616. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
67617. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
67618. Pick out the scalar quantity
67619. Rectifiers are used to convert
67620. out of the following, which is not emitted by radioactive substance?
67621. Sound waves in air are
67622. Magnetism at the centre of a bar magnet is
67623. It is more difficult to walk on a sandy road than on a concrete road because
67624. Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2
67625. Of the following properties of a wave, the one that is independent of the other is its
67626. Lux is the SI unit of
67627. On a rainy day, small oil films on water show brilliant colours. This is due to
67628. Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
67629. Materials for rain-proof coats and tents owe their water-proof properties to
67630. RADAR is used for
67631. Sound of frequency below 20 Hz is called
67632. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because
67633. Suitable impurities are added to a semiconductor depending on its use. This is done in order to
67634. Stars twinkle because
67635. It takes much longer to cook food in the hills than in the plains, because
67636. Moment of inertia is
67637. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
67638. Inside an aeroplane, flying at a high altitude,
67639. Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?
67640. One thousand microns is equal to
67641. Sound travels at the fastest speed in
67642. oil raise up the wick in a lamp. The principle involves
67643. Superconductors are substances which
67644. Light travels at the fastest speed in
67645. Railway tracks are banked on curves
67646. On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because
67647. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
67648. Intensity of sound at a point is ____ its distance from the source.
67649. Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open
67650. Radio telescopes are better than optical telescopes because